Skip to Content
MilliporeSigma
All Photos(5)

Key Documents

View All Documentation

186651

Sigma-Aldrich

18-Crown-6

greener alternative

99%

Synonym(s):

1,4,7,10,13,16-Hexaoxacyclooctadecane

Sign Into View Organizational & Contract Pricing
All Photos(5)

About This Item

Empirical Formula (Hill Notation):
C12H24O6
CAS Number:
17455-13-9
Molecular Weight:
264.32
Beilstein/REAXYS Number:
1619616
EC Number:
241-473-5
MDL number:
MFCD00005113
UNSPSC Code:
12352005
PubChem Substance ID:
24851233
NACRES:
NA.22

assay

99%

form

solid

greener alternative product characteristics

Catalysis
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

mp

42-45 °C (lit.)

greener alternative category

, Aligned

SMILES string

O1CCOCCOCCOCCOCCOCC1

InChI

1S/C12H24O6/c1-2-14-5-6-16-9-10-18-12-11-17-8-7-15-4-3-13-1/h1-12H2

InChI key

XEZNGIUYQVAUSS-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for catalysis. Find details here.

18-Crown-6 is the simplest crown ether that can be prepared by reacting triethylene glycol with triethylene glycol dichloride in the presence of potassium hydroxide as base.

Application

18-Crown-6 may be used to catalyze the N-alkylation of heterocyclic compounds and allylation of functionalized aldehydes.
Additive for greener etherification using KF-alumina.
Additive for greener etherification using KF-alumina.

Synthesis of diaryl ethers, diaryl thioethers, and diarylamines mediated by potassium fluoride-alumina and 18-crown-6
Phase-transfer catalyst used in a chemoselective reduction of fused tetrazoles with NaBH4 and potassium hydroxide.
Can be useful as phase-transfer catalysts.

Other Notes

Macrocyclic polyethers with repeating (-CH2CH2O) units. The compounds are ionophoric (form stable complexes with cations).

related product

Product No.
Description
Pricing

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Seul-A Park et al.
Nature communications, 10(1), 2601-2601 (2019-06-15)
Environmental and health concerns force the search for sustainable super engineering plastics (SEPs) that utilise bio-derived cyclic monomers, e.g. isosorbide instead of restricted petrochemicals. However, previously reported bio-derived thermosets or thermoplastics rarely offer thermal/mechanical properties, scalability, or recycling that match
Muyang Ban et al.
Nature communications, 9(1), 3892-3892 (2018-09-27)
Organometal halide perovskites (OHP) are promising materials for low-cost, high-efficiency light-emitting diodes. In films with a distribution of two-dimensional OHP nanosheets and small three-dimensional nanocrystals, an energy funnel can be realized that concentrates the excitations in highly efficient radiative recombination
Synthesis, 3275-3275 (2006)
Preparation and purification of 18-crown-6 [1, 4, 7, 10, 13, 16-hexaoxacyclooctadecane].
Gokel GW, et al.
The Journal of Organic Chemistry, 39(16), 2445-2446 (1974)
Phase-transfer alkylation of heterocycles in the presence of 18-crown-6 and potassium tert-butoxide.
Guida WC and Mathre DJ
The Journal of Organic Chemistry, 45(16), 3172-3176 (1980)
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service